Spider
(spid), n. an eight-legged arachnid of the order Araneida, usu. furnished with
a spinning apparatus utilized by the most species for making webs to catch their
prey; an arachnid resembling this; a spider-like thing, esp. a three-legged
frying-pan, grid-iron, frame etc. an arrangement of elastic ropes with hooks
attached, used for fastening loads to car roofs, motorcycles etc; a long-legged
rest for a cue in snooker. spider-catcher, n. a bird of the Indian genus Arachnothera;
the wall-creeper. spider-crab, n. a crab with long thin legs. spider-line, n.
a filament of spider's web used in the reticle of astronomical instruments etc.
spider-monkey, n. a monkey belonging to the American genus Ateles or Eriodes
with long limbs and slender bodies. spider plant, n. a house plant having streamers
of long narrow leaves with central white or yellow stripes. spider-wasp, n.
a wasp that stores its nest with spiders and other insects. spider's web, spider-web,
n. spider-like, a., adv. spidery, a. [OE for spinther, spinner, see Spin]
Spin
spin (spin), vt. (pres. p. spinning past spun (spun),
?span (span), p.p. spun) to draw out and twist (wool, cotton etc.) into threads;
to make (yarn etc.) thus; of spiders etc., to produce (a web, cocoon etc.) by
drawing out a thread of viscous substance; to tell, compose etc., at great length;
to make (a top etc.) rotate rapidly; to shape in a lathe etc.; to fish with
a revolving bait; sl. to reject after examination. vi. to draw out and twist
cotton etc., into threads; to make yarn etc., thus; to whirl round; to turn
round quickly; to fish with a spinning bait; to go along with great swiftness.
n. the act or motion of spinning, a whirl; a brief run in a motor car etc.;
a rapid diving descent accompanied by a continued gyration of the aeroplane;
(Austral.) fortune, luck. in a flat spin, extremely agitated or confused. to
spin a yarn, to tell a story. to spin out, to compose or tell (a yarn etc.)
at great length; to prolong, to protract; to spend (time) in tedious discussion
etc. spin-bowling, n. in cricket, a style of bowling in which the ball is delivered
slowly with an imparted spin to make it bounce unpredictably. spin-bowler, n.
spin-drier, n. a machine that dries washing to the point of being ready for
ironing by forcing out the water by centrifugal force. spin-dry, vt. spin-off,
n. a by-product, something derived from an existing idea or product. spinner,
n. one who spins; a machine for spinning thread; one who shapes things in a
lathe; a spider, a spinneret; (Cricket) a ball bowled with a sharp spin; a spin-bowler;
a fishing lure designed to revolve in the water; (Austral.) the man who tosses
the coin in two-up. spinneret (-ret), n. the spinning organ of a spider through
which the silk issues; the orifice through which liquid cellulose is projected
to form the threads of rayon or artificial silk. spinnery, n. a spinning-mill.
spinning, n. ? spinning-house, n. a house of correction in which women of loose
character were obliged to spin, beat hemp etc.spinning-jenny, n. a mechanism
invented by Hargreaves in 1767 for spinning several strands at once. spinning-mill,
n. a factory where spinning is carried on. spinning-wheel, n. a wheel driven
by the foot or hand, formerly used for spinning wool, cotton, or flax. [OE spinnan
(cp. Dut.and G spinnen, Icel. and Swed. spinna), cogn. with SPIN1]
Spin 1
span1 (span), vt. (past, p.p. spanned) to extend from
side to side of (a river etc.); to measure with one's hand expanded; to encompass,
to cover. n. the space from the end of the thumb to the end of the little finger
when extended, esp. as a former measure, 9 in. (23 cm); a brief space of distance
or time; an entire stretch of distance or time (e.g. a lifespan, attention span);
the space from end to end of a bridge etc.; the horizontal distance between
the supports of an arch; a wingspan. span-long, a. of the length of a span.
span-roof, n. an ordinary roof with two sloping sides. span-worm, n. the larva
of the geometer moth. spanless (-lis), a. measureless. spanner1, n. [OE spannan
(Dut. and G spannen, Icel. spenna, also Gr. spaein, to draw)]
Spider
Any arachnid of the order Araneae. There are about 30,000 known species, mostly
a few centimetres in size, although a few tropical forms attain great size,
for example, some bird-eating spiders attain a body length of 9 cm/3.5 in. Spiders
produce silk, and many spin webs to trap their prey. They are found everywhere
in the world except Antarctica. Many species are found in woods and dry commons;
a few are aquatic. Spiders are predators; they bite their prey, releasing a
powerful toxin from poison glands which causes paralysis, together with digestive
juices. They then suck out the juices and soft parts. Over 630 species of spider
have been identified in Britain. One of the most familiar is the common garden
spider Araneus diadematus, which spins webs of remarkable beauty. There are
three species of house spider: Tegenaria domestica, Tegenaria atrica, both up
to 2 cm/0.75 in long, and Tegenaria parietina, better known as the cardinal
spider. The first book devoted to spiders was English Spiders 1678 by Martin
Lister, who described 38 species.
Structure
Unlike insects, the head and breast are merged to form
a cephalothorax, connected to the abdomen by a characteristic narrow waist.
There are eight legs, and usually eight simple eyes.Two leglike pedipalps at
the front of the spider are adapted in males for the transmission of sperm to
the female. On the undersurface of the abdomen ar the undersurface of the abdomen
are spinnerets, usually six, which exude a viscid fluid. This hardens on exposure
to the air to form silky threads, used to make silken egg cases, silk-lined
tunnels, or various kinds of webs and snares for catching prey which is then
wrapped. Seven different types of spider silk have been identified. The threads
make webs and traps for the capture of prey, they serve for aerial transport,
and are used as a safeguard against falling. Not all spiders use webs, however.
life history
Spiders are oviparous, and the female encloses her eggs
in a silken bag which is sometimes carried about with her, sometimes concealed
in the nest, and sometimes attached to solid objects. The young do not undergo
objects. The young do not undergo metamorphosis, but moult repeatedly until
they reach adult size. They typically live for about a year.
Varieties
Species of interest include the zebra spider Salticus
scenicus, a longer-sighted species which stalks its prey and has pads on its
feet which enable it to walk even on glass; the poisonous tarantula, whose bite
can cause local inflammation but rarely death; the black widow; trapdoor spiders,
family Ctenizidae, closely related to species that existed some 400 million
years ago; the cross spider Araneus diadematus, which spins webs of remarkable
beauty; one of the few aquatic species of spider, the water spider Argyroneta
aquatica, which fills a `diving bell? home with air trapped on the hairs of
the body, and constructs a web below water; and the largest member of the group,
the bird-eating spider genus Mygale of South America, with a body about 6-9
cm/2.4-3.5 in long and a leg-span of 30 cm/1 ft. Wolf-spiders are a widely distributed
group of predators. The female carries the young on her back for a few days
after hatching. The bauble spider Achaearanea globispira was discovered 1994
in the Cedarberg Mountains, South Africa. It is 2-3 mm/0.1 in long and builds
a bauble-shaped nest of silk, covered with sand and up to 13mm/0.5 in long.
The nest contains spiral tunnels and is suspended from overhanging rocks by
a single thread. A new species of spider was discovere 1995, in the Simpson
Desert, Australia. The slit spider Fissarena ethabuka is about 15 mm/0.6 in
in length, and inhabits a broad (up to 10 cm/3.9 in wide) horizontal slit in
the sand, with a sloping burrow behind. It feeds on ants and other insects that
fall into its burrow. The slit spider is unusual in that it does not use silk,
either to trap prey or construct its burrow.
1.Find
& right answer
A. Brown recluse spider lives in forest
B. Brown recluse spider lives in forest and home
C. Brown recluse spider lives in near and home
2.Find & right answer
A. Brown recluse spider is hunting at the day time
B. Brown recluse spider is hunting at night
C. Brown recluse spider is hunting at hunting
3.Find & right answer
A. Bird Eating spider have pink legs and black toes
B. Bird Eating spider have black legs and pink toes
C. Bird Eating spider have black legs and black toes
4.Find & right answer
A. Brown recluse spider is not very dangerous than
flower spider
B. Brown recluse spider is very dangerous than flower spider
C. They are equally
5.What spider is eat mushrooms and berries ?
A. Black widow spider
B. Harvestmen spider
C. Trapdoor spider
6.What spider have reddish triangles on the abdomen
A. Black widow spider
B. Brown recluse spider
C. Bird eating spider
7.Find a right answer
A. Traingular spider have traingular abdomen with
reddish triangles
B. Traingular spider have very big traingular abdomen
C. Traingular spider have little and mooth traingular abdomen
8.What spider have spines on the legs ?
A. Traingular spider
B. Brown recluse spider
C. Black widow spider
9.How meny eys have Wolf spider
A. 4 eyes
B. 8 eyes
C. 6 eyes
10. What is color hair of Trapdoor spider ?
A. Brown
B. Violet
C. Paler gold
11.Who's front legs are londer than back?
A. Gant green Huntsman spider
B. Brown Huntsman spider
12.What spider lives in bamboo forests and rain
forests
A. Bird eating spider
B. Flower spider
C. Trapdoor spider
13.Eggs of Bird eating spider hatch in
A. 3-4 weeks
B. 12-14 weeks
C. 2-12 weeks
14.What spider make a web on the entranee of the
burrow after his hunting?
A. Brown recluse spider
B. Bird eating spider
C. Trapdoor spider
15.What's the size of a Trapdoor spider
A. 1.5-3 sin
B. 15 sin
C. 6-7 sin
Answer
1. c 2. b 3. a 4. b 5. b 6. a 7. c 8. a 9. b 10. c 11. a 12. a 13. c 14.
b 15. a
Life
Cycle and Habits
These spiders spin small, loose, white to off-white
webs with irregular strands. The female lays eggs from May through August in
off-white silken cases about 1/3-inch in diameter. Sacs containing 40 or more
eggs each are found hung in the web, overwinter in sheltered, dark areas and
are guarded by the female until her death. Each female may lay as many as 300
eggs during her lifetime. Spiderlings emerge in 24 to 36 days leaving the egg
case with slow development, and are influenced by weather conditions and food
availability. Spiders can survive long periods of time without food or water
and may live as long as two years. This spider is most active at night when
it comes out in search of food consisting of cockroaches and other small insects.
During the day, time is spent in quiet, undisturbed places such as bathrooms,
bedrooms, closets, basements and cellars. The spiders sometimes take shelter
under furniture, appliances and carpets, behind baseboards and door facings,
or in corners and crevices. Some have been found in stored clothing, old shoes,
on the undersides of tables and chairs, and in folded bedding and undisturbed
towels stored for long periods of time. Outdoors, the spider may be found in
sheltered corners among debris, in wood piles, under loose bark and stones,
in old barns, storage sheds and garages. These spiders are very adaptable and
may be active in temperatures ranging from 45 to 110 deg F.
Bite Symptoms
The severity of a person's reaction to the bite depends on the amount of venom
injected and individual sensitivity to it. Bite effects may be nothing at all,
immediate or delayed. Some may not be aware of the bite for 2 to 8 hours, whereas
others feel a stinging sensation usually followed by intense pain if there is
a severe reaction. A small white blister usually rises at the bite site surrounded
by a large congested and swollen area. Within 24 to 36 hours, a systemic reaction
may occur with the victim characterized by restlessness, fever, chills, nausea,
weakness and joint pain. The affected area enlarges, becomes inflamed and the
tissue is hard to the touch. The spider's venom contains an enzyme that destroys
cell membranes in the wound area with affected tissue gradually sloughing away,
exposing underlying tissues. Within 24 hours, the bite site can erupt into a
"volcano lesion". The open wound may range from the size of an adult's thumbnail
to the span of a hand. The sunken, ulcerating sore may heal slowly up to 6 to
8 weeks. Full recovery may take several months and scarring may remain. Plastic
surgery and skin grafts are sometimes required.
First Aid
If bitten, remain calm, collect the spider, if possible, for positive identification
and get medical attention immediately. Apply antiseptic solution to prevent
infection and ice packs to relieve local swelling and pain directly to the bite
area. An effective antivenom is not generally available. The physician will
usually administer high doses of cortisone-type hormones to combat hemolysis
and other systemic complications. A report suggests that treatment with dapsone
may reduce the degree of tissue damage.
Prevention
Shake out clothing and shoes before dressing, and inspect bedding and towels
before using. People are most often bitten when putting on clothing that has
hung undisturbed or shoes seldom worn, into which a spider has moved. Do not
go barefoot or handle firewood without gloves. Remove trash, old boxes, piles
of lumber, old clothing and other unwanted items. Eliminate cluttered areas
in basements, closets, attics and other outbuildings. Dust and vacuum thoroughly
and more frequently around windows, corners in rooms, under furniture, in storage
areas and normally undisturbed places to eliminate spiders, webs and egg sacs.
Use a dust mop, broom and dust pan, if needed. Install screens on doors and
windows to prevent entry. Seal or caulk cracks and crevices where spiders can
enter the house. Wash off the outside of the house and roof eves.
Insecticides
Adult spiders spend little time in direct contact with surfaces. Instead, they
are found in or on webbing. Thorough applications of fine particles of insecticides
such as ULV, aerosols or fogs contact spiders in their webs causing quicker
population reduction.Use space sprays of pyrethrins or resmethrin for useful
clean outs, especially attics and crawl spaces. Thoroughly treat cracks and
crevices of decorative molding, window and door trim and undersides of tables,
chairs and shelves with residual pesticides. Use Diazinon, or propoxur as a
long-lasting residual treatment. Outdoors, spray around the perimeter of buildings
using formulations that will not damage plants. Treat under eaves, patios and
decks if the house is of pier and beam construction. Baygon, Diazinon and permethrin
are frequently used. There are many other labeled pesticides for spider control.
Some are labeled for homeowner use, while others are labeled only for the licensed,
certified, pesticide applicator or pest control operator. Homeowners can use
amorphous silica gel, some formulations of bendiocarb, chlorpyrifos, and permethrin;
diazinon, esfenvalerate, propoxur, pyrethrin plus resmethrin. In addition, the
licensed pesticide applicator can use bendiocarb + pyrethrins, clyfluthrin,
cypermethrin, deltamethrin, lambdacyhalothrin, propetamphos and tralmoethrin.
Before using any pesticide, always read the label and follow directions and
safety precautions. This publication contains pesticide recommendations that
are subject to change at any time. These recommendations are provided only as
a guide. It is always the pesticide applicator's responsibility, by law, to
read and follow all current label directions for the specific pesticide being
used. Due to constantly changing labels and product registration, some of the
recommendations given in this writing may no longer be legal by the time you
read them. If any information in these recommendations disagrees with the label,
the recommendation must be disregarded. No endorsement is intended for products
mentioned, nor is criticism meant for products not mentioned. The author, The
Ohio State University and Ohio State University Extension assume no liability
resulting from the use of these recommendations.
Size
1/4 to 3/4 inch (6.4-19.1mm)
Color
Golden brown
Habitat
Brown recluse spiders are found primarily in the Midwest. Many cases of bites
are reported from Texas, Kansas, Missouri, and Oklahoma. The edge of its range
just reaches the tip of western Virginia, but it occurs rarely in this state.
The spider commonly lives in basements and garages of houses and often hides
behind boards and boxes. Bites often occur when the spiders hide in towels or
old clothes left in those areas.
Type Of Damage
The severity of the bite may vary. The symptoms may vary from no harm at all
to a reaction that is very severe. Often there is a systemic reaction within
24-36 hours characterized by restlessness, fever, chills, nausea, weakness,
and joint pain. Where the bite occurs there is often tissue death and skin is
sloughed off. In some severe cases, a wound may develop that lasts several months.
Control
In all cases, a physician should be notified. If at all possible, kill and take
the spider to the physician for positive identification. Individual spiders
can be crushed underfoot or sprayed with an aerosol spray. Clean up and remove
any potential hiding places. Important note: Many of the wolf spiders are similar
in appearance and have similar markings as the brown recluse. They are large,
robust, and hairy and, therefore, can be distinguished from the brown recluse.
Interesting Facts
Spiders are seldom aggressive and bite only when threatened or injured.
Identification
This information is from personal observation of these spiders that I have found
in my house and storage shed in Fannin County, Texas. The images are intended
to help people learn to identify the brown recluse spider from a safe distance,
and are copyright 1995 by David Lines. Most books and encyclopedias do not contain
photos of the brown recluse, only drawings. The 'real thing' can be misidentified
unless carefully compared with photos or a dead specimen. Notice that the abdominal
color varies, as shown by the two photos. The brown recluse is dangerous but
clumsy. They can't climb glass. They often get curious about a glass container
that is next to a surface they can cling to, venture down onto the smooth surface,
then are trapped.
Natural Enemies
The brown recluse has a better-than-even chance of losing a street fight with
a cricket, but I've seen one kill a brown cricket, possibly because they're
smaller. I have tried confining these spiders with crickets, with mixed results.
Sometimes they will simply show no interest in each other, sometimes crawling
over one another looking for an exit. I recently found a little spider eating
a recluse. I like these little spiders! Click on the small photo for a closer
look.
Effects of The Brown Recluse Bite
Individual's sensitivity varies, but if you have an unidentified bite that is
reacting similar to the people in these photos, these injuries are from three
different people: Recluse bite, 48 hours later Recluse bite, 72 hours later
Recluse bite, 2 years later. Yes, the venom can apparently remain active that
long in sensitive people. The doctor who supplied these photos is researching
a new method of treatment that has had promising preliminary results. If you
have a recluse bite and would like to get help, and can travel to the Fort Worth,
Texas area, send me an email note with your name and phone number and a brief
description of your injury and I'll forward them. Some references for medical
information on high-voltage shock for the treatment of snake bite, brown-recluse
spider bite, etc.:
Medical Significance
The brown recluse has a better-than-even chance of losing a street fight with
a cricket, but I've seen one kill a brown cricket, possibly because they're
smaller. I have tried confining these spiders with crickets, with mixed results.
Sometimes they will simply show no interest in each other, sometimes crawling
over one another looking for an exit. I recently found a little spider eating
a recluse. I like these little spiders! Click on the small photo for a closer
look.
Caution
Pesticide recommendations in this publication are registered for use in Kentucky,
USA ONLY! The use of some products may not be legal in your state or country.
Please check with your local county agent or regulatory official before using
any pesticide mentioned in this publication. Of course,
Description
The brown recluse spider belongs to a group of spiders commonly known as the
"fiddle-back" spiders because of the violin-shaped marking they have on their
cephalothorax. The shape and intensity of the fiddle design may vary. A more
constant characteristic for identification is the number and pattern of the
eyes. Most spiders have four pairs of eyes. The brown recluse has only three
pairs of eyes, arranged in a semicircle on the front of the cephalothorax. These
spiders are pale tan to brown in color. Female bodies range in size from 10
to 15 mm and have a leg span over 25 mm. Males are generally half the size of
females
Web
The web of a brown recluse spider is irregularly constructed with loose strands
of silk. In contrast, the orb-weaving garden spider has a symmetrical web. The
strands of the recluse's webs are white to off-white in color.
Life Cycle
The average egg sac is about 1/3 inch in diameter, and each sac contains an
average of 40 eggs. The brown recluse female can produce up to 300 eggs in her
lifetime. Egg sacs are produced during summer, and the female spider will guard
the egg sac until the piderlings emerge. Spiderlings emerge after an incubation
period of 24 to 36 days and take between 10 to 12 months to develop into adults.
Treatment
First aid for someone who has been bitten by a brown recluse spider includes
use of an ice pack to prevent or to reduce the swelling in the area where the
bite occurred. Cooling the area helps to lessen tissue damage. Also, sanitizing
the area with hydrogen peroxide or alcohol helps to prevent infection. Promptly
seek medical attention. If the spider can be found, it should be collected and
taken with the patient to the doctor to confirm the identity of the spider involved.
Medical treatment may include the use of non-steroidal anti-inflammatory drugs
for inflammation and pain relief, antibiotics to prevent bacterial infection,
and treatments to prevent tetanus. Sulfone drugs may be prescribed. They have
decreased the need to surgically excise severe wounds in several studies. Other
treatments may include early surgical excision of the wound and the use of corticosteroids
and steroids
Sanitation
Remove any spiders found by vacuuming. Dispose of the bag outside. Remove webs
so that you can monitor potential spider activity in future inspections. Sticky
boards placed along walls can also be used for monitoring purposes. Professional
pest control services can use flushing agents as a monitoring tool in an effort
to locate breeding areas. The person conducting the inspection should wear gloves.
To prevent spiders from crawling up pant legs, constrict the pants with rubber
bands around the ankles. The person may even consider wearing a bee veil when
inspecting severely infested homes to prevent spiders from dropping on them.
Exclussion
Seal cracks and crevices in the structure where spiders can enter the home.
Common areas for cracks and crevices are window sills, door thresholds, and
around pipes. Outdoors, eliminate potential breeding habitats such as wood piles,
leaf litter, and rocks where spiders may occur near your house.
Chemicals
Use of pesticides labeled for spider control is warranted for serious brown
recluse infestations. Spot treating corners or cracks and crevices in a house
with a pyrethroid pesticide, and treating crawl spaces with a dust formulation
are some techniques available. Enlisting the services of a professional pest
control operator is an option to be seriously considered for brown recluse infestations.
Inspection
Recluse spiders should be sought near places where bites occur. Look along walls
in uninhabited rooms, under and behind furniture, in the far reaches of storerooms,
in unused closets, under stairs and in hanging clothing that has not been used
during the current season. Concentrate on areas outside daily human traffic
patterns. Homes and buildings that have been unoccupied for months or longer
are particularly susceptible to increased spider populations. Outdoors, in the
southern and western part of its range, these spiders may be found in cracks
between the soil and structure foundations, doorstoops, and in window wells.
Outside of their range, inspect around luggage, trunks, and furniture brought
from southern Europe, the Mediterranean, or North Africa. American personnel,
who have lived overseas in these areas, sometimes introduceL. rufescens in returning
household goods
Size
16
cm legspan
Habitat
Forest
Food
Mainly insects, but can even take small birds. It can jump into the air to
pounce on prey.
Breeding
The female makes a silk cocoon for her eggs, which she protects in a silken
tube until they hatch. The babies have pink legs and black toes - the opposite
to the adults.
Identification
There are many species of Wolf spider, ranging in size from 1 to 8 centimetres
across the legs. Their body colours are typically drab, with most having variegated
patterns in brown, grey, black and white. Often the patterns include radiating
lines on the carapace and scroll-like patterns on the abdomen. The spider's
underside is grey or black, sometimes with white markings. They may also have
orange spots on the sides of their jaws. Wolf spiders have eight eyes, with
the four largest arranged in a square on top of the head.
Description
Wolf spiders are usually large, hairy spiders that are not associated with webs.
They look much worse than they are.
Distribution & Habitat
Wolf spiders are found throughout Australia. They are robust, agile hunters
which live on the ground in leaf litter or burrows. They are often found in
lawns and gardens.
Range
Hot dry areas - gardens, bark, litter. Common in open country and desert. Each
species is often restricted to a particular microhabitat. Many species Australia-wide.
Web
Rover. Some build trapdoors, some build retreats in shrubs.
Bite
Symptoms of a wolf spider bite are usually minor, restricted to local pain or
itchiness. Less commonly, symptoms can include swelling, prolonged pain, dizziness,
rapid pulse and nausea.
Notes
Nip and run. Mild to local effects. Two species are predators of cane toads.
L.lapidosatakes small toads and frogs; L.obscuroides has been noted biting a
large toad on back of head. Toad died in one hour.
Control
Spider control is best done on a one-to-one, as needed basis. A general spray
for spiders is not recommended, unless the infestation seems severe. Tolerate
what you can, spray with an aerosol what you can't.
Interesting Facts
Most homeowners have misconceptions about spiders-they are pictured to be poisonous,
and likely to attack at any time. Wrong. The only dangerous spiders we have
in Virginia are the brown recluse spider and the black widow spider. The brown
recluse is not common. The black widow is common, but reports of it biting people
are infrequent. For the most part, spiders are beneficial, eating insects and
other spiders.
First Aid
Seek medical attention if symptoms persist. The Spiders! exhibition has closed
but the Spiders! website is still here.
Food & Hunting
The wolf spider is a meat eating creature and hunts and chases its prey. The
variety of food the spider will eat ranges from small insects to other spiders.
Once the wolf spider has found its prey it lies in wait for the right moment
and then gives chase, much like the wolf. Once the spider has pounced on the
victim it uses its two very large and powerful jaws to crush the victim to a
pulp and then feasts of its juices.
Life
Cycle
Female
harvestmen lay their eggs on the ground or in rotten wood in fall. In the spring,
the tiny arachnids hatch, white and tiny copies of the adults. The young harvestmen
soon darken, and as they grow through the summer, molt seven times until they
reach full size. The adults then mate and lay eggs for the next year’s generation.
Most species live for only one year.
Habits
Harvestmen are most
commonly found in late summer when they have reached adult size. They are usually
found in cool sheltered areas, such as near trees or structures. They need lots
of moisture to survive, drinking from puddles and other water sources. Harvestmen
are generally nocturnal and solitary, although occasionally they may be found
in groups with legs entwined in protected areas such as holes in trees. Harvestmen
are generally leisurely in their movements, but can move rapidly when disturbed.
In addition to speed and detachable legs, harvestmen have another defense against
predators…an obnoxious smell. A pair of pores on each side of the body release
a fluid that smells somewhat like walnuts or horse radish, barely detected by
us, but obnoxious to toads or birds. The same glands also produce a fluid that
lays down a trail for other harvestmen to follow.
Diet
Harvestmen generally feed on dead insects, although they will kill very small
insects and mites when possible. Prey includes leafhoppers, aphids, snails,
earthworms, flies, true spiders, other daddy-longlegs and insect eggs. They
do not spin webs to catch prey. They also suck juices from soft berries and
fruits, and will occasional eat plant matter and fungi.
Control
No control is necessary
Rating
Good Guy, although if preferred prey, such as aphids, mites, flies are in short
supply, they may move on to earthworms. Harvestmen are also valuable scavengers,
cleaning up dead insects and rotting vegetable matter.
Correct
Species Name
There are many different types of Huntsman spiders.
The most common of the Huntsman spiders is the Delena cancerides, which belongs
to the family Selenopidae.
Distribution & Habits
Isopeda, Isopedella and Neosparassus are widely distributed throughout Australia.
Heteropoda is common in northern tropical areas. The Common Huntsman spiders
are found living under loose bark. Brown Huntsman, Gland Green Huntsman and
Shield Huntsman spiders are found under bark, on foliage and in leaf litter.
They sometimes enter houses.
Identification
Huntsman spiders are large, long-legged spiders, measuring up to 15 cm across
the legs. They are mostly grey to brown, sometimes with bands across the legs.
Common Huntsman spiders have flattened bodies adapted for living under loose
bark.
Description
The male huntsman is
approximately 20-25mm long, and the female is about 25-28mm long. They are generally
a browny grey colour. The legs are lighter at the top and get darker as they
go to the end. The body is also light. The male is smaller and slimmer than
the female. The extra hairs on the legs and feet of the Huntsman let it run
on smoothe surfaces, even if it is upside down.
Diet
The Huntsman spider eats a wide variety of insects. It basicly eats what it
can catch. They do not use the normal web to catch their food, they actually
prey on their food. They generally eat all of the things that we call pests.
Bite
The huntsman spider is not dangerous to man. Their bite is totally harmless
to humans, although it may be painful. They will not bite unless they are provoked.
The female of the species will protect the eggsac, and at this time they will
be very wary of predators and may become agressive towards them.
Location
This type of Huntsman spider is found all over Australia and Tasmania. They
are found almost everywhere. They can live indoors and outdoors, and in some
places they are considered as pests because there are so many of them. They
generally live in warm to temperate climates which makes Australia the perfect
place for them to live. You can find them in trees, under logs and in cracks
and crevices, basicly everywhere a spider likes to live.
What To Do If You Find a Huntsman
If you find a Huntsman in the house you should just leave it alone, as it will
rid your house of pests such as moths, cockroaches, beetles and flies. If you
can not stand the sight of spiders or disagree with having them in the house,
you should catch them making sure you do not harm it. You should then let it
out in the garden to eats the pests out there.
Distribution
Misgolas group spiders are found in eastern Australia especially in coastal
and highland regions of New South Wales and Victoria. M. rapax is the common
Brown Trapdoor Spider around Sydney. Aganippe group spiders are found across
southern Australia west of the Great Dividing Range and include the Adelaide
Trapdoor Spider, A. subtristis. Brown Trapdoor burrows are open. Sigillate Trapdoor
burrows are made with soil or litter trapdoors.
Identification
Trapdoor spiders are 1.5-3 cm body length. They have short, blunt spinnerets.
Males have a small double spur halfway along their first leg. Brown Trapdoor
Spiders are dull brown spiders with a cover of paler gold hairs on carapace.
There are often pale bars across the abdomen. Males have thick 'boxing glove'
palps. Brown Trapdoor spider eyes are arranged in two compact rows. Sigillate
Trapdoor Spiders are brown spiders with a glossy carapace and 4-6 hairless spots
on top of abdomen. Their eyes are arranged in three rows.
Bite
Brown Trapdoor Spiders are often mistaken for Funnel-web spiders but their bites
are not dangerous. Local pain and swelling may occur. Sigillate Trapdoor Spider
bites may also cause local pain and swelling. There is one report of unspecified
'severe effects' from a Sigillate Trapdoor Spider bite.
First Aid
Seek medical attention if symptoms persist. The name Trapdoor Spider covers
several families and many different species. Their correct identification is
a matter for experts. Several species occur in bushland areas of Brisbane
Identification
Full size - 20 cent piece, leg diameter - pin to matchstick. All white or
yellow with stout legs held like a crab.
Habitat & Rang
Flowers, shrubs, clothes lines and thus clothes. Most common summer. Australia-wide.
Web
Rover
Bite
Ready biter; mild local pain
Family
Cleome
Common Name
Spider flower
Scientific Name
Type
annual
Light Requirements
0
Moisture Requirements
Height
3 - 5 ft
Spread
Season of Bloom
Color
white, pink, rose, lilac or purple
Fragrance
Soil Requirements
Maintenance
Garden Uses
Appearance
The giant blooms create a sensation at the back of a sunny border. They begin
blooming w3hen they're small. As the stems grow, new flower buds form on top,
while fading blooms below turn into decorative seedpotds that look like spider
legs.
Growing and Propagation
Location
Notes
Habitat
Black widow spiders are common around wood piles, and
are frequently encountered when homeowners carry firewood into the house.
Also found under eaves, in boxes, outdoor toilets, meter boxes, and other
unbothered places.
Description
The female Black Widow is shiny black, usually with a reddish hourglass shape
on the underside of her spherical abdomen. Her body is about 1 inch long;
the male is about half her size and may have a pair of reddish stripes on
the sides of his abdomen. Widow spiders are the best known and largest of
the Cobweb Weavers. All widows are poisonous. Black Widows comprise about
6 species and inhabit most warmer regions of the world to a latitude of about
45 degrees. The species Latrodectus hesperus is common in the western US and
is the Black Widow found in the deserts. Latrodectus mactans is the Black
Widow common in the eastern and central US.
Habits
Both Western and Eastern Black Widows spin webs that lack shape and form.
Their webs are erratic in appearance, and the silk is stronger than almost
all other arachnids. Like most arachnids, the Black Widow preys on insects.
After ensnaring its prey in the web, the Black Widow makes small punctures
in the victim's body and sucks out the liquid contents.The Black Widow is
preyed upon by Mud-Dauber wasps. Females rarely leave their web, but will
bite if threatened. The bite itself is often not painful and may go unnoticed.
But the poison from a Black Widow bite can cause abdominal pain similar to
appendicitis as well as pain to muscles or the soles of the feet. Other symptoms
include alternating salivation and dry-mouth, paralysis of the diaphragm,
profuse sweating and swollen eyelids. Physicians can relieve severe pain with
injections of calcium gluconate, and antivednein is available in areas where
poisonous spiders are common. But no first aid treatment is available for
spider bites. It may take several days to recover, but recovery usually occurs
without serious complications.
Life Cycle
Adult male Black Widows wander in search of females but do not feed or bite.
They are not often seen because they are usually eaten by the female after
mating. The female then lays several batches, containing up to 750 eggs each,
in one summer. The egg case, about 1/2 inch in diameter, is suspended in the
web. It is white to tan in color and has a paper-like texture. The young Black
Widows are colored orange and white when they emerge 1 to 4 weeks later. The
female Black Widow may live for more than a year and a half.
Type of Damage
The black widow is not aggressive. It will, however, bite instinctively when
touched or pressed.
Control
Be very careful when working around areas where black widow spiders may be
established. Take proper precautions-wear gloves and pay attention to where
you are working. Black widow bites are sharp and painful, and the victim should
go to the doctor immediately for treatment. To control the black widow, carefully
remove all materials where they might hide. They can be cleaned out of an
area simply by knocking down the webs, spiders, and round tan egg sacs with
a stick and crushing them underfoot.
Interesting Facts
The female eats the male after mating. She hangs belly upward and rarely leaves
the web.
Bite Symptoms
According to Willia Gertsch, curator of spiders at the American Museum of
Natural History, New York, the venom of the black widow spider is 15 times
as toxic as the venom of the prairie rattlesnake. However, only a minute amount
of the toxin is injected with a single bite by the spider, while the relatively
large amount of injected rattlesnake venom results in about 15 to 25 percent
mortality among those bitten. The severity of a person's reaction to the bite
depends on the area of the body bitten, amount of venom injected, depth of
bite, seasonal changes and temperature. The bite feels like a pin prick or
is not even felt. At first, there may be only slight local swelling and two
faint red spots surrounded by local redness at the bite. Pain becomes intense
in one to three hours and may continue up to 48 hours. Pain usually progresses
from the bitten member up or down the arm or leg, finally localizing in the
abdomen and back. The abdominal muscles may become rigid and board-like with
severe cramps. There may be pain in the muscles and soles of the feet, and
eyelids may become swollen. Other mptoms may be nausea, profuse perspiration,
tremors, labored breathing and speech, and omiting. During this time, a feeble
pulse, cold clammy skin, unconsciousness, convulsions and even death may result
if the victim does not receive medical attention immediately. Additional complications
may occur due to the infection of the bite. However, with some untreated individuals,
symptoms may diminish in several hours and be gone in several days after agony.
Bites are uncommon and serious long-term complications or death are rare.
Only four deaths were officially attributed to black widow bites in the United
States from 1960
First Aid
If bitten, remain calm, collect the spider, if possible, for positive identification
and get medical attention immediately. First aid is of limited help. Application
of a mild antiseptic such as iodine or hydrogen peroxide prevents infection.
Persons younger than 16 and older than 60, especially those with a heart condition,
may require a hospital stay. A physician can give specific antivenom or calcium
gluconate to relieve pain. Healthy people recover rapidly in two to five days.
Prevention
Remove trash, old boxes, piles of lumber, old rubble piles and other unwanted
items from under or around houses and outbuildings. Do not go barefoot or
handle firewood without gloves. Install screens on doors and windows to prevent
entry. Seal or caulk cracks and crevices where spiders can enter the house.
Wash off the outside of the house or building, especially around window wells
and other undisturbed places where webs are built. Spiders are fragile and
easily damaged, so sweeping with a stiff broom will remove webbing and usually
kill them.
Insecticides
Since black widow spiders spend most of the time in or on webbing, thorough
applications of fine particles of insecticides, such as ULV, aerosols or fogs,
contact spiders in their webs causing quicker population reduction. Although
pyrethrin is registered specifically for black widow spiders, other space
sprays of resmethrin are useful for clean outs in outbuildings, crawl spaces,
etc. There are many other labeled pesticides for spider control. Some are
labeled for homeowner use, while others are labeled only for the licensed,
certified, pesticide applicator or pest control operator. Homeowners can use
amorphous silica gel, some formulations of bendiocarb, chlorpyrifos, and permethrin;
diazinon, esfenvalerate, propoxur, pyrethrin plus resmethrin. In addition,
the licensed pesticide applicator can use bendiocarb + pyrethrins, clyfluthrin,
cypermethrin, deltamethrin,
lambdacyhalothrin, propetamphos and tralmoethrin. Residual crack and crevice
sprays of Diazinon or propoxur applied where spiders can hide and enter buildings,
are helpful. Outdoors, spray around the perimeter of buildings using formulations
that will not damage plants. Treat under patios and decks if the house is
of pier and beam construction. Baygon, Diazinon, Drion and Permethrin are
frequently used. Before using any pesticide, always read the label and follow
directions and safety precautions.
Background
A mature female is a globe-shaped, black, shiny spider with a red or orange
marking or hourglass on the underside of her abdomen. Males are smaller, brown
and not a significant threat to man. A strong, irregular web indicates the
presence of a black widow spider. They weave egg sacks which may contain up
to 300 eggs. Removal or destruction of the egg sacks may help control the
population. This spider is resistant to many insecticides. Signs & Symptoms
of Envenomation: Initial sensation may be painful, with little local reaction.
Later, pain, cramping and rigidity may appear in the shoulders, back, chest
or abdomen. Other manifestations include nausea, vomiting, headache, anxiety
and hypertension.